Dear Principal,
VOIP Today Magazine is happy to launch its most challenging Competition under the sponsorship of Nostarch company (www.nostarch.com).
Test your knowledge and win a free copy of Hacking VoIP book by Himanshu Dwivedi .
Himanshu Dwivedi is anther for Hacking VoIP and he a leading security expert and researcher. He has published four books, Hacking Exposed.
To start competition just visit VOIP Today Magazine website www.voiptoday.org and select “Test you knowledge” from “Tutorial” menu.
Good luck.
VoIP Today Magazine Team